EP1094858B1 - A medication delivery device and a cartridge assembly for use in the same - Google Patents
A medication delivery device and a cartridge assembly for use in the same Download PDFInfo
- Publication number
- EP1094858B1 EP1094858B1 EP99931026A EP99931026A EP1094858B1 EP 1094858 B1 EP1094858 B1 EP 1094858B1 EP 99931026 A EP99931026 A EP 99931026A EP 99931026 A EP99931026 A EP 99931026A EP 1094858 B1 EP1094858 B1 EP 1094858B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- assembly
- cartridge
- dosing
- cartridge assembly
- delivery device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
- A61M2005/2403—Ampoule inserted into the ampoule holder
- A61M2005/2407—Ampoule inserted into the ampoule holder from the rear
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
- A61M2005/2485—Ampoule holder connected to rest of syringe
- A61M2005/2488—Ampoule holder connected to rest of syringe via rotation, e.g. threads or bayonet
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
- A61M2005/2485—Ampoule holder connected to rest of syringe
- A61M2005/2492—Ampoule holder connected to rest of syringe via snap connection
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3129—Syringe barrels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31525—Dosing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31533—Dosing mechanisms, i.e. setting a dose
- A61M5/31535—Means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing, means allowing correction of overset dose
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
- A61M5/31578—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod
Definitions
- the present invention relates to a medication delivery device having a cartridge assembly and a dosing assembly coupled together for delivering selected doses of medication.
- Some medication such as insulin is self-administered.
- the typical diabetes patient will require injections of insulin several times during the day.
- the required insulin dose will vary from patient to patient, and will for each patient often also vary during the day.
- Each patient will often establish a regimen for the insulin administration adjusted to his or her insulin need as well as lifestyle.
- Medication delivery pens have been developed to facilitate the self-administration of medication, such as insulin.
- One prior art medication delivery pen includes a pen body assembly comprising a medication cartridge and a plunger device.
- a needle assembly may be connected to the pen body assembly.
- the medication is delivered by moving or pressing a plunger in the direction of the needle assembly thereby delivering the medication.
- the pen body assembly is discarded.
- the needle assembly will often have to be displaced by a new assembly or new needle due to increasing bluntness of the needle making injections painful for the patient.
- medication delivery pens were developed, for which pens only a part of the pen was discarded after medication exhaustion, such as the cartridge only.
- a medication delivery pen has a reusable pen body assembly and a disposable cartridge assembly that are threadedly engageable with one another.
- the disposable cartridge assembly includes a plunger and can releasably receive a needle cannula assembly through a threaded coupling.
- a driving means in the pen body assembly engages the plunger after engagement of the pen body assembly and the cartridge assembly, whereby the pen is ready for dosing the medicine within the cartridge.
- the cartridge holder assembly can be disassembled from the pen body assembly after the medication therein has been exhausted, discarded and replaced.
- a drawback of the above-mentioned pen is that the driving means of the pen body may be disengaged from the plunger of the cartridge during normal use resulting in inaccurate dosing of the medicine.
- the needle assembly will often have to be replaced independently of replacement of the cartridge.
- the cartridge assembly may inadvertently be released or partly released from the pen body assembly.
- the driving means of the pen body may be disengaged from the plunger of the cartridge.
- the user will most probably not be aware of the disengagement but will receive only a portion or even nothing of the medicine.
- a medication delivery device is provided as defined in claim 1.
- the dosing assembly is reusable and the cartridge assembly is disposable, and accordingly, a second aspect of the present invention is a medication delivery device wherein the dosing assembly is releasably coupled to the cartridge assembly.
- the plunger means must disengage the stopper when the cartridge assembly is deliberately released from the dosing assembly because the medication in the cartridge has been exhausted and the cartridge assembly is to be discarded. In this situation the plunger means is to be retracted to the dosing assembly before assembling the device with a new cartridge assembly.
- Securing the abutment of the plunger means on the stopper during use of the medication delivery device, in particular when the needle assembly is coupled to and/or decoupled from the cartridge assembly, may be carried out by a variety of means.
- the abutment is secured by preventing the cartridge assembly from being inadvertently released from the dosing assembly.
- a medication delivery device which device is arranged for securing that the plunger means abuts on the stopper during coupling and/or decoupling of the needle assembly.
- the dosing assembly is coupled to the cartridge assembly at the end of the cartridge assembly opposite the means for mounting the needle assembly, and the plunger means is a rod element adapted to exert an axial movement of the stopper towards the sealed end of the cartridge.
- the means for coupling the dosing assembly and the cartridge assembly together are such that the coupling and/or decoupling of the needle assembly does not cause an axial movement of the cartridge assembly with respect to the dosing assembly.
- the rod element does not disengage the stopper in the cartridge when the user attaches the needle assembly or removes it after use. Thereby the user can be confident of the accuracy of the dosage selected.
- the means for coupling the dosing assembly and the cartridge assembly together may be any suitable coupling, preferably a releasable coupling.
- suitable coupling preferably a releasable coupling.
- the coupling are snap locks, such as snap locks with guidewire and sideways snap locks, snap locks released through threads, bajonet locks, luer locks, hinged locks, threaded locks and any suitable combinations thereof.
- the means for releasably coupling the needle assembly and the cartridge assembly together are such that the coupling and/or decoupling of the needle assembly cannot cause an axial movement of the cartridge assembly with respect to the dosing assembly.
- the preferred couplings between the needle assembly and the cartridge assembly include releasable snap locks.
- Another preferred embodiment includes a safety on the coupling between the dosing assembly and the cartridge assembly, such as hinge on the coupling or a threaded coupling releasable only after exerting an axial pressure on the coupling.
- preferred combinations of couplings between the dosing assembly and the cartridge assembly and between the needle assembly and the cartridge assembly, respectively, are a threaded coupling combined with a snap coupling, a bajonet lock or a luer lock combined with a snap lock, or a snap lock combined with a snap lock, or any other combination for which the couplings are independently working.
- the cartridge assembly comprises a cartridge for the medication to be delivered.
- the cartridge assembly has one end sealed with a pierceable sealing, said end of the cartridge assembly comprising coupling means for releasable mounting a needle assembly, and another end comprising coupling means adapted to engage a dosing assembly.
- the cartridge comprises a stopper.
- the cartridge assembly may further comprise a housing for protecting at least a part of the cartridge assembly.
- At least one of the coupling means of the cartridge assembly is unitarily moulded with the cartridge, and in a more preferred embodiment all the coupling means are unitarily moulded with the cartridge.
- the cartridge assembly may be comprised of just one part, i.e. the cartridge including the coupling means.
- the invention in another embodiment relates to a medication delivery device for transferring medication from the cartridge into a syringe with a needle.
- the coupling means for engaging the needle assembly may be replaced by coupling means for engaging the syringe, or coupling means for both may be provided.
- the coupling means may be a syringe holder, for example a cylinder coupled to the cartridge comprising a central bore for receiving the syringe.
- the syringe is coupled to the cartridge having the needle piercing the sealing.
- the dosing means the metered amount of medication is driven into the syringe.
- the syringe is then ready for injection after being removed from the cartridge.
- Fig. 1 is an exploded perspective view of the medication delivery device.
- Fig. 2 is a cross-sectional view showing part of the medication delivery device, 2a immediately after assembling before the first injection, and 2b after some time of use.
- Fig. 3 is a cross-sectional view showing the cartridge before assembling of the medication delivery device.
- a medication delivery device in accordance with the present invention is identified generally by the numeral 20 in Fig. 1 and 2.
- Medication delivery device 20 includes a dosing assembly 6, and cartridge assembly 1, a needle assembly 16 and a cap 14.
- the dosing assembly 6 is illustrated in Fig. 1 and 2. It is understood, however, that the dosing assembly 6 according to the invention may be any suitable dosing unit including plunger means, and accordingly, that variations from the depicted embodiment may be provided, and are considered to be within the scope of this invention.
- the dosing assembly 6 includes a cylindrical housing surrounding the plunger means 17 of the dosing unit and having opposed proximal and distal ends.
- the plunger means comprises a rod element 7 which is adapted to engage the stopper 4 of the cartridge assembly 1.
- the rod element 7 advances axially into the cartridge 5 during injections.
- the dosing assembly may have any suitable driving means for advancing the rod element 7.
- the dosing unit 6 preferably also comprises scale means 10 indicating the dosing quantity selected by activating the dose setting means 9 for defining specified selected doses of medication to be delivered.
- the selected dose may be delivered by actuating the actuator button 18.
- the actuator button is part of the driving means of the dosing assembly exerting its force on the rod element 7.
- the dosing assembly further comprises coupling means 8 adapted for engagement with the cartridge assembly.
- the coupling means 8 may be internal or external couplings In a preferred embodiment the coupling 8 is an internal coupling.
- cartridge assembly 1 is illustrated in Fig. 1 and 2, and in greater detail in Fig. 3.
- cartridge assembly 1 includes a moulded cartridge 5 extending from proximal end 21 to distal end 22.
- coupling means 2 for releasably mounting a needle assembly 11.
- coupling means 3 for mounting a dosing assembly 6.
- Cartridge 5 also comprises a stopper 4 in sliding fluid tight engagement within said cartridge 5.
- the stopper 4 is adapted to receive the plunger means, such as a rod element 7 of the dosing assembly 6.
- the cartridge assembly 1 may further comprise a housing for protecting some or all of the cartridge 5.
- the cartridge assembly 1 includes a housing, one or both of the couplings 2,3 of the cartridge may be moulded unitarily with the housing.
- At least one of the couplings 2, 3 is moulded unitarily with the cartridge 5, minimising the total number of parts of the device and thereby the production costs. Also, a very precise coupling is obtained, since no further steps are to be taken to attach the coupling means to the catridge.
- the cartridge 5 may have integrally moulded reinforcements of the cartridge wall.
- the depicted cartridge 5 is cylindrical having couplings 2, 3 at opposed ends.
- the cartridge may obtain any suitable form and the cross-section may be circular or non-circular, such as substantially triangular or oval.
- the couplings 2, 3 are opposing each other having the same axis.
- the axis of coupling 2 may be arranged to be separate from coupling 3, that is in any angle with respect to the axis of coupling 3.
- the axis of coupling 2 may be perpendicular to the axis of coupling 3, or they may be parallel but not overlapping.
- a suitable choice of material allows the cartridge to be at least partly transparent, whereby the user can see whether any content, such as a liquid is left in the cartridge.
- the coupling means 3 is an external thread, whereas the coupling means 2 is a recess for a snap lock of the needle assembly. Both coupling means are moulded unitarily with the cartridge.
- the device according to the invention may include a protective cap 14 that is removably mounted over the cartridge assembly 1 and/or the needle 11 and which is removed before injection of the medication in the cartridge 5.
- the cap further ensures that the content of the cartridge is protected against sunlight.
- the various parts of the medication delivery device are advantageously made of plastics, e.g. by injection moulding.
- the medication delivery device 20 may further comprise any appropriate needle assembly 11, such as a double ended needle 13 having opposed proximal and distal points and a lumen extending axially therebetween.
- any appropriate needle assembly 11 such as a double ended needle 13 having opposed proximal and distal points and a lumen extending axially therebetween.
- a mounting hub 12 is engaged on the needle 13 and is removably connected to the coupling means 2 at the needle end of the cartridge assembly.
- the relative location of the mounting hub 12 ensures that the proximal point of the needle 13 will pierce the sealing when the mounting hub 12 is engaged with the coupling means 2 on the cartridge assembly 1.
- the needle assembly 11 may further comprise a removable shield or cap 15 for protecting against accidental needle sticks.
- the device according to the invention is suitable for delivering pre-set dosages of insulin, it is however understood that the device is suitable for the injection of pre-set dosages of other liquids.
- the user will set the dose by means of the dose setting means 9.
- the cap 14 Before activating the actuator button 18 the cap 14 must be removed from the cartridge assembly 1 whereby the device 20 is prepared for an injection.
- the injection is effected by activating the actuator button 18, which again will effect the stopper 4 to be moved towards the needle at the sealed end 22 of the cartridge 5, thereby delivering the desired pre-set dosage.
- a subsequent dosage of medication will be set in exactly the same manner as described above. However, for such a subsequent dosage, the rod element 7 and the stopper 4 will be in a partly advanced position as starting point. Dose setting and injections can be carried out until all of the medication has been used.
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Abstract
Description
- The present invention relates to a medication delivery device having a cartridge assembly and a dosing assembly coupled together for delivering selected doses of medication.
- Some medication, such as insulin is self-administered. The typical diabetes patient will require injections of insulin several times during the day. The required insulin dose will vary from patient to patient, and will for each patient often also vary during the day. Each patient will often establish a regimen for the insulin administration adjusted to his or her insulin need as well as lifestyle. Medication delivery pens have been developed to facilitate the self-administration of medication, such as insulin.
- One prior art medication delivery pen includes a pen body assembly comprising a medication cartridge and a plunger device. A needle assembly may be connected to the pen body assembly. The medication is delivered by moving or pressing a plunger in the direction of the needle assembly thereby delivering the medication. When the medication in the cartridge is exhausted the pen body assembly is discarded. Depending on the medication needs for each individual the medication in the cartridge will last for several days. During this period the needle assembly will often have to be displaced by a new assembly or new needle due to increasing bluntness of the needle making injections painful for the patient.
- Due to the environmental and economical reasons medication delivery pens were developed, for which pens only a part of the pen was discarded after medication exhaustion, such as the cartridge only.
- An example of prior art pens is disclosed in EP 0 688 571 wherein a medication delivery pen has a reusable pen body assembly and a disposable cartridge assembly that are threadedly engageable with one another. The disposable cartridge assembly includes a plunger and can releasably receive a needle cannula assembly through a threaded coupling. A driving means in the pen body assembly engages the plunger after engagement of the pen body assembly and the cartridge assembly, whereby the pen is ready for dosing the medicine within the cartridge. The cartridge holder assembly can be disassembled from the pen body assembly after the medication therein has been exhausted, discarded and replaced.
- However, a drawback of the above-mentioned pen is that the driving means of the pen body may be disengaged from the plunger of the cartridge during normal use resulting in inaccurate dosing of the medicine.
- For the device disclosed in EP 0 688 571, the needle assembly will often have to be replaced independently of replacement of the cartridge. When releasing the needle assembly from the cartridge assembly the cartridge assembly may inadvertently be released or partly released from the pen body assembly. Thereby the driving means of the pen body may be disengaged from the plunger of the cartridge. In particular if the pen body assembly is only partly released from the cartridge assembly the user will most probably not be aware of the disengagement but will receive only a portion or even nothing of the medicine.
- Even pens with differently pitched threaded couplings and/or threaded couplings having different diameters whereby the force exerted to fasten and/or release one coupling is greater than the force necessary for the other coupling present this problem. It is easy to imagine that a small obstruction (a sandskorn, for example) to the smoothest going coupling will necessitate a greater force to fasten/release that coupling which force tends towards the force necessary for the other coupling.
- Accordingly, it is an object of the present invention to provide a medication delivery device with which the inadvertent disengagement of the driving means and plunger means from the plunger or stopper in the cartridge is avoided.
- According to a first aspect of the invention a medication delivery device is provided as defined in
claim 1. - In a preferred embodiment the dosing assembly is reusable and the cartridge assembly is disposable, and accordingly, a second aspect of the present invention is a medication delivery device wherein the dosing assembly is releasably coupled to the cartridge assembly.
- By the term "use of the device" is meant the normal use, including metering and delivering the medication, removing a cap from the cartridge assembly and/or needle as well as attaching and releasing the needle assembly. It is understood that the plunger means must disengage the stopper when the cartridge assembly is deliberately released from the dosing assembly because the medication in the cartridge has been exhausted and the cartridge assembly is to be discarded. In this situation the plunger means is to be retracted to the dosing assembly before assembling the device with a new cartridge assembly.
- Securing the abutment of the plunger means on the stopper during use of the medication delivery device, in particular when the needle assembly is coupled to and/or decoupled from the cartridge assembly, may be carried out by a variety of means. In a preferred embodiment the abutment is secured by preventing the cartridge assembly from being inadvertently released from the dosing assembly.
- Furthermore, it is a preferred aspect of the invention to provide a medication delivery device, which device is arranged for securing that the plunger means abuts on the stopper during coupling and/or decoupling of the needle assembly.
- In one embodiment of the invention the dosing assembly is coupled to the cartridge assembly at the end of the cartridge assembly opposite the means for mounting the needle assembly, and the plunger means is a rod element adapted to exert an axial movement of the stopper towards the sealed end of the cartridge.
- Accordingly, it is an aspect of the present invention to provide a medication delivery device, wherein the means for coupling the dosing assembly and the cartridge assembly together are such that the coupling and/or decoupling of the needle assembly does not cause an axial movement of the cartridge assembly with respect to the dosing assembly. In this way it is assured that the rod element does not disengage the stopper in the cartridge when the user attaches the needle assembly or removes it after use. Thereby the user can be confident of the accuracy of the dosage selected.
- The means for coupling the dosing assembly and the cartridge assembly together may be any suitable coupling, preferably a releasable coupling. Examples of the coupling are snap locks, such as snap locks with guidewire and sideways snap locks, snap locks released through threads, bajonet locks, luer locks, hinged locks, threaded locks and any suitable combinations thereof.
- In particular, when the cartridge assembly is released from the dosing assembly through a movement including an axial movement, such as through a threaded coupling, it is preferred that the means for releasably coupling the needle assembly and the cartridge assembly together are such that the coupling and/or decoupling of the needle assembly cannot cause an axial movement of the cartridge assembly with respect to the dosing assembly. Thus, in that respect examples of the preferred couplings between the needle assembly and the cartridge assembly include releasable snap locks. Another preferred embodiment includes a safety on the coupling between the dosing assembly and the cartridge assembly, such as hinge on the coupling or a threaded coupling releasable only after exerting an axial pressure on the coupling.
- According to the invention preferred combinations of couplings between the dosing assembly and the cartridge assembly and between the needle assembly and the cartridge assembly, respectively, are a threaded coupling combined with a snap coupling, a bajonet lock or a luer lock combined with a snap lock, or a snap lock combined with a snap lock, or any other combination for which the couplings are independently working.
- Another aspect of the present invention is a cartridge assembly for use in the medication delivery device according to the invention. The cartridge assembly comprises a cartridge for the medication to be delivered. The cartridge assembly has one end sealed with a pierceable sealing, said end of the cartridge assembly comprising coupling means for releasable mounting a needle assembly, and another end comprising coupling means adapted to engage a dosing assembly. Furthermore, the cartridge comprises a stopper.
- The cartridge assembly may further comprise a housing for protecting at least a part of the cartridge assembly.
- In a preferred embodiment at least one of the coupling means of the cartridge assembly is unitarily moulded with the cartridge, and in a more preferred embodiment all the coupling means are unitarily moulded with the cartridge. In the latter case the cartridge assembly may be comprised of just one part, i.e. the cartridge including the coupling means.
- In another embodiment the invention relates to a medication delivery device for transferring medication from the cartridge into a syringe with a needle. In this embodiment the coupling means for engaging the needle assembly may be replaced by coupling means for engaging the syringe, or coupling means for both may be provided. The coupling means may be a syringe holder, for example a cylinder coupled to the cartridge comprising a central bore for receiving the syringe. The syringe is coupled to the cartridge having the needle piercing the sealing. By activation of the dosing means the metered amount of medication is driven into the syringe. The syringe is then ready for injection after being removed from the cartridge.
- Fig. 1 is an exploded perspective view of the medication delivery device.
- Fig. 2 is a cross-sectional view showing part of the medication delivery device, 2a immediately after assembling before the first injection, and 2b after some time of use.
- Fig. 3 is a cross-sectional view showing the cartridge before assembling of the medication delivery device.
- A medication delivery device in accordance with the present invention is identified generally by the
numeral 20 in Fig. 1 and 2.Medication delivery device 20 includes adosing assembly 6, andcartridge assembly 1, aneedle assembly 16 and acap 14. - The
dosing assembly 6 is illustrated in Fig. 1 and 2. It is understood, however, that thedosing assembly 6 according to the invention may be any suitable dosing unit including plunger means, and accordingly, that variations from the depicted embodiment may be provided, and are considered to be within the scope of this invention. In the depicted embodiment thedosing assembly 6 includes a cylindrical housing surrounding the plunger means 17 of the dosing unit and having opposed proximal and distal ends. - In one aspect of the invention the plunger means comprises a
rod element 7 which is adapted to engage thestopper 4 of thecartridge assembly 1. Therod element 7 advances axially into thecartridge 5 during injections. The dosing assembly may have any suitable driving means for advancing therod element 7. - The
dosing unit 6 preferably also comprises scale means 10 indicating the dosing quantity selected by activating the dose setting means 9 for defining specified selected doses of medication to be delivered. The selected dose may be delivered by actuating theactuator button 18. The actuator button is part of the driving means of the dosing assembly exerting its force on therod element 7. - The dosing assembly further comprises coupling means 8 adapted for engagement with the cartridge assembly. The coupling means 8 may be internal or external couplings In a preferred embodiment the coupling 8 is an internal coupling.
- The
cartridge assembly 1 is illustrated in Fig. 1 and 2, and in greater detail in Fig. 3. In Fig. 1cartridge assembly 1 includes a mouldedcartridge 5 extending fromproximal end 21 todistal end 22. - At the
distal end 22 of thecartridge assembly 1 is provided coupling means 2 for releasably mounting aneedle assembly 11. At theproximal end 21 of thecartridge assembly 1 is provided coupling means 3 for mounting adosing assembly 6. The coupling means are as described above. -
Cartridge 5 also comprises astopper 4 in sliding fluid tight engagement within saidcartridge 5. Thestopper 4 is adapted to receive the plunger means, such as arod element 7 of thedosing assembly 6. - The
cartridge assembly 1 may further comprise a housing for protecting some or all of thecartridge 5. When thecartridge assembly 1 includes a housing, one or both of thecouplings 2,3 of the cartridge may be moulded unitarily with the housing. - In a preferred embodiment at least one of the
couplings 2, 3 is moulded unitarily with thecartridge 5, minimising the total number of parts of the device and thereby the production costs. Also, a very precise coupling is obtained, since no further steps are to be taken to attach the coupling means to the catridge. - Instead of the protective housing the
cartridge 5 may have integrally moulded reinforcements of the cartridge wall. - The depicted
cartridge 5 is cylindrical havingcouplings 2, 3 at opposed ends. However, the cartridge may obtain any suitable form and the cross-section may be circular or non-circular, such as substantially triangular or oval. - In Fig. 1 and Fig. 2 the
couplings 2, 3 are opposing each other having the same axis. However, the axis of coupling 2 may be arranged to be separate fromcoupling 3, that is in any angle with respect to the axis ofcoupling 3. Thus, the axis of coupling 2 may be perpendicular to the axis ofcoupling 3, or they may be parallel but not overlapping. - A suitable choice of material allows the cartridge to be at least partly transparent, whereby the user can see whether any content, such as a liquid is left in the cartridge.
- Referring to Fig. 3 the coupling means of the cartridge are shown in greater detail. The coupling means 3 is an external thread, whereas the coupling means 2 is a recess for a snap lock of the needle assembly. Both coupling means are moulded unitarily with the cartridge.
- The device according to the invention may include a
protective cap 14 that is removably mounted over thecartridge assembly 1 and/or theneedle 11 and which is removed before injection of the medication in thecartridge 5. The cap further ensures that the content of the cartridge is protected against sunlight. - The various parts of the medication delivery device are advantageously made of plastics, e.g. by injection moulding.
- The
medication delivery device 20 may further comprise anyappropriate needle assembly 11, such as a double endedneedle 13 having opposed proximal and distal points and a lumen extending axially therebetween. - A mounting
hub 12 is engaged on theneedle 13 and is removably connected to the coupling means 2 at the needle end of the cartridge assembly. The relative location of the mountinghub 12 ensures that the proximal point of theneedle 13 will pierce the sealing when the mountinghub 12 is engaged with the coupling means 2 on thecartridge assembly 1. - The
needle assembly 11 may further comprise a removable shield or cap 15 for protecting against accidental needle sticks. - The device according to the invention is suitable for delivering pre-set dosages of insulin, it is however understood that the device is suitable for the injection of pre-set dosages of other liquids.
- In use the user will set the dose by means of the dose setting means 9. Before activating the
actuator button 18 thecap 14 must be removed from thecartridge assembly 1 whereby thedevice 20 is prepared for an injection. The injection is effected by activating theactuator button 18, which again will effect thestopper 4 to be moved towards the needle at the sealedend 22 of thecartridge 5, thereby delivering the desired pre-set dosage. A subsequent dosage of medication will be set in exactly the same manner as described above. However, for such a subsequent dosage, therod element 7 and thestopper 4 will be in a partly advanced position as starting point. Dose setting and injections can be carried out until all of the medication has been used.
Claims (16)
- A medication delivery device comprising
a cartridge assembly (1), having a distal end (22) and a proximal end (21) said distal end of the cartridge assembly comprising coupling means for releasably mounting a needle assembly, and said cartridge assembly comprising a cartridge (5) having one end sealed with a pierceable sealing and having a stopper (4) adapted to receive plunger means,
a dosing assembly (6) comprising plunger means (7),
and optionally a needle assembly,
wherein the cartridge assembly and the dosing assembly are releasably coupled together, and the device comprises a combination of couplings between the dosing assembly and the cartridge assembly and between the needle assembly and the cartridge assembly, said combination capable of securing that the plunger means abuts on the stopper during coupling and/or decoupling of the needle assembly. - A medication delivery device according to any of the preceding claims, wherein the plunger means comprises a rod element adapted to exert an axial movement of the stopper towards the sealed end of the cartridge.
- A medication delivery device according to any of the preceding claims, wherein the means for releasably coupling the dosing assembly and the cartridge assembly together are such that the coupling and/or decoupling of the needle assembly does not cause an axial movement of the cartridge assembly with respect to the dosing assembly.
- A medication delivery device according to any of the preceding claims, wherein the dosing assembly is released from the cartridge assembly through a movement including an axial movement.
- A medication delivery device according to claim 4, wherein the dosing assembly is released from the cartridge assembly through a threaded coupling.
- A medication delivery device according to any of the preceding claims, wherein the dosing assembly comprises scale means.
- A medication delivery device according to any of the preceding claims, wherein the dosing assembly comprises dose setting means for defining specified selected doses of medication to be delivered.
- A medication delivery device according to any of the preceding claims, wherein the cartridge assembly comprises a housing.
- A medication delivery device according to any of the preceding claims, wherein the cartridge is unitarily moulded with at least one coupling means.
- A medication delivery device according to any of the preceding claims, further comprising a cap for protecting the needle assembly and/or the cartridge assembly.
- A cartridge assembly for use in the medication delivery device as claimed in any of claims 1-10, having one end sealed with a pierceable sealing, said end of the cartridge assembly comprising coupling means for engaging a needle assembly, and another end comprising coupling means adapted to engage a dosing assembly, further comprising a cartridge said cartridge comprising a slidable stopper.
- A cartridge assembly according to claim 11, further comprising a housing.
- A cartridge assembly according to claim 11 or 12, wherein the cartridge is unitarily moulded with at least one coupling means.
- A cartridge assembly according to any of claims 11-13, wherein the coupling means adapted to engage the dosing unit is such that coupling and/or decoupling of the needle assembly does not cause an axial movement of the cartridge assembly with respect to the dosing assembly.
- A cartridge assembly according to any of claims 11-14, wherein the dosing assembly is released from the cartridge assembly through a movement including an axial movement
- A cartridge assembly according to claim 15, wherein the dosing assembly is released from the cartridge assembly through a threaded coupling.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK98909 | 1998-07-08 | ||
DKPA199800910 | 1998-07-08 | ||
DKPA199801501 | 1998-11-17 | ||
DK981501 | 1998-11-17 | ||
PCT/DK1999/000387 WO2000002606A1 (en) | 1998-07-08 | 1999-07-05 | A medication delivery device and a cartridge assembly for use in the same |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1094858A1 EP1094858A1 (en) | 2001-05-02 |
EP1094858B1 true EP1094858B1 (en) | 2003-10-08 |
Family
ID=26064887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99931026A Revoked EP1094858B1 (en) | 1998-07-08 | 1999-07-05 | A medication delivery device and a cartridge assembly for use in the same |
Country Status (16)
Country | Link |
---|---|
US (1) | US6582408B1 (en) |
EP (1) | EP1094858B1 (en) |
JP (1) | JP2002520098A (en) |
KR (1) | KR20010053438A (en) |
CN (1) | CN1308551A (en) |
AT (1) | ATE251478T1 (en) |
AU (1) | AU4769699A (en) |
BR (1) | BR9911930A (en) |
CA (1) | CA2336729A1 (en) |
DE (1) | DE69911966T2 (en) |
HU (1) | HUP0102524A3 (en) |
IL (1) | IL140526A0 (en) |
NO (1) | NO20010091L (en) |
PL (1) | PL345360A1 (en) |
WO (1) | WO2000002606A1 (en) |
ZA (1) | ZA200100181B (en) |
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DE20112501U1 (en) * | 2001-07-30 | 2002-12-19 | Disetronic Licensing Ag, Burgdorf | Locking lock for connecting housing parts of an injection or infusion device |
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DE10163327A1 (en) | 2001-07-30 | 2003-02-27 | Disetronic Licensing Ag | Reservoir module with piston rod |
DE10163325B4 (en) | 2001-07-30 | 2005-07-28 | Tecpharma Licensing Ag | Locking lock for connection of housing sections of an administering device |
DE10163326A1 (en) | 2001-07-30 | 2003-02-27 | Disetronic Licensing Ag | Administration device with dosing device |
CN1278666C (en) * | 2001-08-27 | 2006-10-11 | 诺沃挪第克公司 | A cartridge and a medical delivery system accommodating such a cartridge |
DE20209051U1 (en) | 2001-12-21 | 2003-04-24 | Disetronic Licensing Ag, Burgdorf | Medicament administration device has dosage adjuster mounted on piston rod and end stop mounted at end of its path, locking system preventing adjuster from rotating and pressing against stop |
US6929619B2 (en) | 2002-08-02 | 2005-08-16 | Liebel-Flarshiem Company | Injector |
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DE602007012354D1 (en) | 2006-07-15 | 2011-03-17 | Novo Nordisk As | MEDICAL DISCHARGE SYSTEM WITH ROTATABLE END CAP |
DE602007011620D1 (en) * | 2006-07-15 | 2011-02-10 | Novo Nordisk As | MEDICAL DISTRIBUTION SYSTEM WITH ASYMMETRIC CODING DEVICES |
US20100010455A1 (en) * | 2006-08-28 | 2010-01-14 | Novo Nordisk A/S | Medical Delivery System Adapted to be Locked Axially and Unlocked Rotationally |
EP2083888A1 (en) * | 2006-11-17 | 2009-08-05 | Novo Nordisk A/S | A medical delivery system comprising a coding mechanism between dosing assembly and medicament container |
US8672897B2 (en) * | 2006-11-21 | 2014-03-18 | Novo Nordisk A/S | Medical delivery system comprising locking ring with L-shaped grooves |
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WO2008074897A1 (en) * | 2006-12-21 | 2008-06-26 | Novo Nordisk A/S | A syringe device |
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DE102008059673A1 (en) * | 2008-11-26 | 2010-05-27 | Bayer Schering Pharma Aktiengesellschaft | Cartridge, a drug dispenser containing the cartridge and uses of the cartridge and the drug dispenser |
CA2796562A1 (en) * | 2010-04-23 | 2011-10-27 | Sanofi-Aventis Deutschland Gmbh | Cartridge assembly having shared fastening means and drug delivery device |
US9022988B1 (en) | 2010-05-07 | 2015-05-05 | Kavan J. Shaban | System and method for controlling a self-injector device |
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JP6130372B2 (en) * | 2011-08-02 | 2017-05-17 | サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | Drug delivery device and cartridge interconnected therewith |
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US10251964B2 (en) | 2016-08-23 | 2019-04-09 | Drma Group International Llc | Self-disinfecting needleless device |
US10195110B2 (en) | 2016-09-08 | 2019-02-05 | Drma Group International Llc | Capping device for disinfecting medical container |
US10391294B2 (en) | 2016-09-12 | 2019-08-27 | Drma Group International Llc | Disinfecting cap |
US10610676B2 (en) | 2016-09-26 | 2020-04-07 | Drma Group International Llc | Disinfecting luer connector |
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-
1999
- 1999-07-05 BR BR9911930-7A patent/BR9911930A/en not_active Application Discontinuation
- 1999-07-05 JP JP2000558864A patent/JP2002520098A/en not_active Withdrawn
- 1999-07-05 CA CA002336729A patent/CA2336729A1/en not_active Abandoned
- 1999-07-05 IL IL14052699A patent/IL140526A0/en unknown
- 1999-07-05 DE DE69911966T patent/DE69911966T2/en not_active Revoked
- 1999-07-05 CN CN99808405A patent/CN1308551A/en active Pending
- 1999-07-05 PL PL99345360A patent/PL345360A1/en unknown
- 1999-07-05 HU HU0102524A patent/HUP0102524A3/en unknown
- 1999-07-05 AT AT99931026T patent/ATE251478T1/en not_active IP Right Cessation
- 1999-07-05 EP EP99931026A patent/EP1094858B1/en not_active Revoked
- 1999-07-05 KR KR1020017000299A patent/KR20010053438A/en not_active Application Discontinuation
- 1999-07-05 AU AU47696/99A patent/AU4769699A/en not_active Abandoned
- 1999-07-05 WO PCT/DK1999/000387 patent/WO2000002606A1/en not_active Application Discontinuation
- 1999-07-08 US US09/349,748 patent/US6582408B1/en not_active Expired - Fee Related
-
2001
- 2001-01-05 NO NO20010091A patent/NO20010091L/en not_active Application Discontinuation
- 2001-01-08 ZA ZA200100181A patent/ZA200100181B/en unknown
Also Published As
Publication number | Publication date |
---|---|
US6582408B1 (en) | 2003-06-24 |
HUP0102524A3 (en) | 2001-12-28 |
ZA200100181B (en) | 2001-07-23 |
BR9911930A (en) | 2002-04-23 |
WO2000002606A1 (en) | 2000-01-20 |
ATE251478T1 (en) | 2003-10-15 |
PL345360A1 (en) | 2001-12-17 |
CN1308551A (en) | 2001-08-15 |
EP1094858A1 (en) | 2001-05-02 |
NO20010091D0 (en) | 2001-01-05 |
KR20010053438A (en) | 2001-06-25 |
HUP0102524A2 (en) | 2001-11-28 |
IL140526A0 (en) | 2002-02-10 |
AU4769699A (en) | 2000-02-01 |
JP2002520098A (en) | 2002-07-09 |
DE69911966D1 (en) | 2003-11-13 |
NO20010091L (en) | 2001-03-06 |
DE69911966T2 (en) | 2004-07-22 |
CA2336729A1 (en) | 2000-01-20 |
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